CVE-2016-5403 Denial of service in n/a
Local guest administrators can crash the QEMU process and consume memory by submitting virtqueue requests without waiting for completion.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-5403?
CVE-2016-5403 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 2 Aug 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The virtqueue_pop function in hw/virtio/virtio.c in QEMU allows local guest OS administrators to cause a denial of service (memory consumption and QEMU process crash) by submitting requests without waiting for completion.
Weakness: CWE-400
Which versions are affected by CVE-2016-5403?
It affects 13 products.
Linux distribution packages (28)
qemu-guest-agent Red Hat:enterprise_linux:6::client | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-img Red Hat:enterprise_linux:6::client | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm Red Hat:enterprise_linux:6::client | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:6::client | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-tools Red Hat:enterprise_linux:6::client | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-guest-agent Red Hat:enterprise_linux:6::computenode | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-img Red Hat:enterprise_linux:6::computenode | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm Red Hat:enterprise_linux:6::computenode | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-tools Red Hat:enterprise_linux:6::computenode | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-img-rhev Red Hat:enterprise_linux:6::hypervisor | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-rhev Red Hat:enterprise_linux:6::hypervisor | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-rhev-debuginfo Red Hat:enterprise_linux:6::hypervisor | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-rhev-tools Red Hat:enterprise_linux:6::hypervisor | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-guest-agent Red Hat:enterprise_linux:6::server | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-img Red Hat:enterprise_linux:6::server | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm Red Hat:enterprise_linux:6::server | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:6::server | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-tools Red Hat:enterprise_linux:6::server | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-guest-agent Red Hat:enterprise_linux:6::workstation | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-img Red Hat:enterprise_linux:6::workstation | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm Red Hat:enterprise_linux:6::workstation | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:6::workstation | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-tools Red Hat:enterprise_linux:6::workstation | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-img-rhev Red Hat:openstack:5::el6 | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-rhev Red Hat:openstack:5::el6 | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-rhev-debuginfo Red Hat:openstack:5::el6 | All versions | 2:0.12.1.2-2.491.el6_8.3 |
qemu-kvm-rhev-tools Red Hat:openstack:5::el6 | All versions | 2:0.12.1.2-2.491.el6_8.3 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Oracle Linux, Oracle Vm Server, Qemu Qemu, Redhat Enterprise Linux Desktop and 7 more.
How do I fix CVE-2016-5403?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2016-5403 being exploited?
There is no known exploitation of CVE-2016-5403 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALPINE-CVE-2016-5403, DEBIAN-CVE-2016-5403, GHSA-w9gj-prpq-pxm9, RHSA-2016:1585, RHSA-2016:1586, RHSA-2016:1652 and 2 more.